20850071 has 8 divisors (see below), whose sum is σ = 22892304. Its totient is φ = 18832320.

The previous prime is 20850059. The next prime is 20850077. The reversal of 20850071 is 17005802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20850071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20850077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4310 + ... + 7763.

It is an arithmetic number, because the mean of its divisors is an integer number (2861538).

Almost surely, 2^20850071 is an apocalyptic number.

20850071 is a deficient number, since it is larger than the sum of its proper divisors (2042233).

20850071 is a wasteful number, since it uses less digits than its factorization.

20850071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 20850071 is about 4566.1877972768. The cubic root of 20850071 is about 275.2342730928.

Adding to 20850071 its reverse (17005802), we get a palindrome (37855873).

The spelling of 20850071 in words is "twenty million, eight hundred fifty thousand, seventy-one".